Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7506705 | Method of producing downhole drill bits with integral carbide studs | Kristin Brandenberg, John R. Keough, Kathy L. Hayrynen | 2009-03-24 |
| 6799648 | Method of producing downhole drill bits with integral carbide studs | Kristin Brandenberg, John R. Keough, Kathy L. Hayrynen | 2004-10-05 |